The chemical industry is an important field involving the delivery of various liquids and increasing pressure, so different types of pumps are required to meet different process requirements and medium characteristics.
What are the pump types used in the chemical industry?
The types of pumps commonly used in the chemical industry are centrifugal pumps, positive displacement pumps, vortex pumps, jet pumps, and special pumps according to the working principle and structure of the pump, the types of pumps commonly used in the chemical industry are centrifugal pumps, positive displacement pumps, vortex pumps, jet pumps, and special pumps.
Centrifugal pump
A centrifugal pump is a pump that uses the centrifugal force generated by the rotation of the impeller to transport liquid. It has the advantages of simple structure, stable operation, high efficiency, and convenient maintenance. It is the most commonly used pump in the chemical industry. Centrifugal pumps can transport various liquids that are clean or contain a small number of impurities, such as water, solvents, acids, bases, etc. Centrifugal pumps can also use different materials and sealing forms according to different working conditions and medium characteristics, such as stainless steel, plastic, mechanical seals, etc.
Positive displacement pump
A positive displacement pump is a pump that uses moving parts such as a plunger, gear, and screw to change the volume of the working chamber to transport liquid. It has the advantages of stable flow, strong self-priming ability, and a wide range of viscosity. A type of pump for liquids containing solid particles. Positive displacement pumps can transport various oils, resins, glues, paints, etc. Positive displacement pumps can also use different materials and sealing forms according to different working conditions and medium characteristics, such as cast iron, rubber, packing seals, etc. For example, the screw pump is a positive displacement pump that uses the screw meshing to produce volume changes to transport liquids. It has the advantages of uniform flow, stable pressure, low noise, and wear resistance. It is suitable for transporting liquids with high viscosity and containing solid particles or fibers, such as crude oil. , paint, asphalt, industrial glue, resin, polymer, etc.
Vortex pump
This is a pump that uses the vortex generated by the impeller to transport liquid. It has the advantages of a compact structure, strong self-priming ability, and high lift. It is suitable for transporting liquids with small flow rates, high viscosity, and large gas content, such as oil products and emulsions. wait.
Jet pump
The jet pump is a kind of pump that uses a high-speed injection of power fluid to mix with the fluid to be transported to generate a vacuum or pressure to transport liquid or gas. It has the advantages of a simple structure, no moving parts, corrosion resistance, energy saving, etc. It is easy to transport in the chemical industry. A pump for volatile or flammable or explosive liquids or gases. Jet pumps can transport various solvents, acid and alkali gases, water gas, etc. Jet pumps can also use different power fluids and nozzle forms, such as steam, air, water, etc., according to different working conditions and medium characteristics.
Special pump
This is a pump designed according to specific process conditions and requirements, with special structures and functions, such as magnetic pumps, diaphragm pumps, vacuum pumps, etc. The advantage of special pumps is that they can adapt to special media and environments, such as flammable and explosive, toxic and harmful, high temperature and high pressure, etc. The disadvantages are that they are expensive and have high technical requirements.
In short, the application of pumps in the chemical industry is very important. It can meet various needs for liquid medium transportation or pressurization in the chemical production process, improve the quality and efficiency of chemical products, and reduce the cost and risk of chemical production.
Application of pumps in the chemical industry
A pump is a commonly used chemical equipment, which can transport various corrosive, volatile, flammable, explosive, toxic, or valuable liquids or gases. There are many types of pumps, which can be divided into positive displacement pumps, centrifugal pumps, jet pumps, etc. according to their working principles and structural characteristics. Different types of pumps are suitable for different working conditions and media. Therefore, in the chemical industry, it is necessary to select a suitable pump based on factors such as flow, head, temperature, pressure, viscosity, density, and corrosion.
Pumps are widely used in the chemical industry, mainly including the following aspects:
1. Delivery of raw materials and products. Pumps can transport chemical raw materials from storage tanks, tank trucks, ships, etc. to production equipment, and can also transport chemical products from production equipment to storage tanks, tank trucks, ships, etc., to realize the circulation and exchange of raw materials and products.
2. Assistance in reaction and separation processes. The pump can provide the required pressure and temperature conditions for the chemical reaction, and can also provide the required pressure difference and flow conditions for the physical separation process, so as to promote the progress and optimization of the reaction and separation process.
3. Support for circulation and cooling process. The pump can circulate the circulating medium (such as water, oil, air, etc.) between different equipment to realize the heating or cooling of equipment or materials and ensure the stability and safety of the production process.
4. Treatment of wastewater and waste gas. Pumps can transport wastewater and waste gas from production equipment to treatment equipment for purification and recycling, reducing environmental pollution and waste of resources.
According to different media properties, flow, pressure, temperature, and other requirements, various types of pumps are used in the chemical industry, such as centrifugal pumps, screw pumps, diaphragm pumps, jet pumps, etc. Each of these pumps has its advantages and disadvantages, and it is necessary to choose the appropriate pump according to the specific working conditions. At the same time, because chemical media are often corrosive, flammable, explosive, toxic, etc., high requirements are put forward for the pump material, sealing, explosion-proof, etc. Therefore, chemical pumps also need continuous technological innovation and Improve to meet the development needs of the chemical industry.
